Reasons to choose PowerShot A310
Released in 2004, PowerShot A310 has about 21 mm² of sensor area, 3.1 MP effective resolution, and a 175 g body. Use these values to narrow the field, not as an overall image-quality score.


The PowerShot A700 has the larger sensor area. More area usually means greater light-gathering potential, though real image quality still depends on sensor architecture and generation.
These cameras were released 2 years apart. Consider sensor generation when comparing pixel metrics.
Amber marks the value that is generally preferable in this comparison context. It is not an overall camera score.
The PowerShot A700 has the larger sensor area. The PowerShot A310 has the lighter body. The PowerShot A700 has the higher effective resolution. The PowerShot A700 is the newer release. Also consider the lens system and subjects you shoot.
Released in 2004, PowerShot A310 has about 21 mm² of sensor area, 3.1 MP effective resolution, and a 175 g body. Use these values to narrow the field, not as an overall image-quality score.
Released in 2006, PowerShot A700 has about 25 mm² of sensor area, 6 MP effective resolution, and a 250 g body. Use these values to narrow the field, not as an overall image-quality score.